2672178123 has 4 divisors (see below), whose sum is σ = 3562904168. Its totient is φ = 1781452080.

The previous prime is 2672178121. The next prime is 2672178143. The reversal of 2672178123 is 3218712762.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2672178123 - 2¹ = 2672178121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2672178121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 445363018 + ... + 445363023.

It is an arithmetic number, because the mean of its divisors is an integer number (890726042).

Almost surely, 2^2672178123 is an apocalyptic number.

2672178123 is a deficient number, since it is larger than the sum of its proper divisors (890726045).

2672178123 is an equidigital number, since it uses as much as digits as its factorization.

2672178123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890726044.

The product of its digits is 56448, while the sum is 39.

The square root of 2672178123 is about 51693.1148510128. The cubic root of 2672178123 is about 1387.6772488762.

The spelling of 2672178123 in words is "two billion, six hundred seventy-two million, one hundred seventy-eight thousand, one hundred twenty-three".